ocr.cpp: In function `int main()': ocr.cpp:14: warning: char format, different type arg (arg 2) ocr.cpp:18: warning: NULL used in arithmetic ocr.cpp:20: warning: NULL used in arithmetic ocr.cpp:39: warning: assignment to `int' from `double' ocr.cpp:39: warning: argument to `int' from `double' ocr.cpp:47: warning: assignment to `int' from `double' ocr.cpp:47: warning: argument to `int' from `double' ocr.cpp:9: warning: `int x' might be used uninitialized in this function ocr.cpp:9: warning: `int y' might be used uninitialized in this function